diff --git a/tools/run-mypy b/tools/run-mypy
index 17a6b3a..5b33910 100755
--- a/tools/run-mypy
+++ b/tools/run-mypy
@@ -36,6 +36,7 @@ exclude = [
 force_include = [
     # Include bots that we migrate to mypy.
     "zulip_bots/zulip_bots/bots/helloworld/helloworld.py",
+    "zulip_bots/zulip_bots/bots/helloworld/test_helloworld.py",
     "zulip_bots/zulip_bots/bots/followup/followup.py",
     "zulip_bots/zulip_bots/bots/followup/test_followup.py",
     "zulip_bots/zulip_bots/bots/giphy/giphy.py",